package main

import (
	"fmt"
	"strings"
)

func main()  {
	fmt.Println(test1("abeder"))
}

func test1(str string) bool {
	if strings.Count(str,"") > 3000 {
		return false
	}

	for _,v :=  range str {
		if strings.Count(str,string(v)) > 1 {
			return false
		}
	}

	return true
}

func test2(str string)  {

}
